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Optical element laminate, backlight and liquid crystal display device

A technology of optical elements and laminates, which is applied in the direction of optical elements, optics, and diffusion elements, etc., can solve the problems of insufficient strength of optical elements, deterioration of display characteristics of liquid crystal display devices, etc., and achieve the effect of suppressing the deterioration of display characteristics

Inactive Publication Date: 2012-02-22
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, it is desirable to provide an optical element laminate by which the problem of insufficient strength of the optical element can be overcome while suppressing an increase in the thickness of the liquid crystal display device, and the deterioration of the display characteristics of the liquid crystal display device can be suppressed.

Method used

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  • Optical element laminate, backlight and liquid crystal display device
  • Optical element laminate, backlight and liquid crystal display device
  • Optical element laminate, backlight and liquid crystal display device

Examples

Experimental program
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Effect test

no. 1 example

[0060] 1.1 Structure of liquid crystal display device

[0061] figure 2 A structural example of the liquid crystal display device according to the first embodiment is shown. like figure 2 As shown, the liquid crystal display device includes a backlight 1 configured to emit light and a liquid crystal panel 2 configured to display an image based on light emitted from the backlight 1 .

[0062] LCD panel

[0063] The liquid crystal panel 2 displays an image by temporally and spatially adjusting light emitted from the backlight 1 . Examples of usable display modes of the liquid crystal panel 2 include twisted nematic (TN) mode, super twisted nematic (STN) mode, vertical alignment (VA) mode, in-plane switching (IPS) mode, optically compensated birefringence (OCB) mode , ferroelectric liquid crystal (FLC) mode, polymer dispersed liquid crystal (PDLC) mode and phase change master-slave (PCGH) mode.

[0064] Backlight

[0065] The backlight 1 is a direct type light emitting d...

no. 3 example

[0106] Figure 25 is an exploded perspective view showing a structural example of the optical element laminate 21 according to the third embodiment. Figure 26 is a sectional view showing an example of the optical element laminate 21 according to the third embodiment. like Figure 25 and Figure 26 As shown, optical element laminate 21 includes one or more rectangular optical elements 24 housed in a space between first optical element 22 and second optical element 23 . The optical element 24 is in the form of a film or a sheet. Preferably, the first optical element 22 and the second optical element 23 are in close contact with one or more optical elements 24 accommodated in the space.

[0107] Optionally, as in Figure 27 As shown, the first optical element 22 and the second optical element 23 can be superimposed on each other such that the side wall 22a of the first optical element 22 extends in a direction opposite to the direction in which the side wall 23a of the seco...

no. 4 example

[0110] Figure 28 is an exploded perspective view showing a structural example of an optical element laminate 21 according to the fourth embodiment. like Figure 28 As shown, the first optical element 22 has two side walls 22a disposed at two opposite sides. Similarly, the second optical element 23 has two side walls 23a provided at two opposite sides. When the first optical element 22 is superimposed on the second optical element 23, the accommodation space is defined by the main surface member 22s and the side wall 22a of the first optical element 22 and the main surface member 23s and the side wall 23a of the second optical element 23 . One or more optical elements 24 are accommodated in this accommodation space. Since the side wall 22a of the first optical element 22 and the side wall 23a of the second optical element 23 are installed, the periphery of the optical element 24 is completely closed.

[0111] The rest of the structure of the fourth embodiment is the same ...

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Abstract

The invention discloses an optical element laminate, a backlight and a liquid crystal display device, wherein the optical element laminate includes a first optical element and a second optical element stacked with the first optical element. Both the first optical element and the second optical element are rectangular films or sheets. The first optical element has at least two sidewalls located at two opposite sides of the four sides of the first optical element, and the second optical element has at least two side walls located at two opposite sides of the four sides of the second optical element side wall at. According to the present invention, the problem of insufficient optical element strength can be overcome while suppressing the increase in thickness of the liquid crystal display device, and the deterioration of the display characteristics of the liquid crystal display device can also be suppressed.

Description

[0001] Cross References to Related Applications [0002] The present invention contains subject matter related to Japanese Priority Patent Application JP 2008-208267 filed in Japan Patent Office on Aug. 12, 2008, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to an optical element laminate, a backlight including the optical element laminate, and a liquid crystal device including the optical element laminate. Specifically, it is related with the optical element laminated body which improves the display characteristic of a liquid crystal display device. Background technique [0004] A large number of optical elements have been used in liquid crystal display devices to improve viewing angles, brightness, and other properties. Examples of these optical elements include sheet-shaped optical elements such as diffusion sheets and prism sheets. [0005] figure 1 The structure of a related art liquid crystal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357F21V13/00F21V8/00G02F1/1333G02B5/02G02F1/1335
CPCG02B6/0088G02F1/133608G02B5/02
Inventor 佐佐木纯关野智之堀井明宏平井基介土井克浩青木诚
Owner SONY CORP